Enhancement origin of SERS from pyridine adsorbed on AgCl colloids |
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| Affiliation: | 1. Benha University, Faculty of Science, Chemistry Dept., Benha, Egypt;2. Chemistry Department, College of Science, Al-Imam Muhammad Ibn Saud lslamic University, Riyadh, Saudi Arabia;3. Department of Chemistry, College of Science and Arts, Aljouf University, P.O. Box 75911, Alqurayat, Saudi Arabia;1. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China;2. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China;1. Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain;2. PhD Program in Industrial Technology: Chemical, Environmental, Energetic, Electronic, Mechanical and Materials at Universidad Rey Juan Carlos, Madrid 28933, Spain;3. Grupo de Investigación “POLímeros: Caracterización y Aplicaciones” (U. A. del ICTP-CSIC), E.T.S.I. Industriales, Universidad Politécnica de Madrid, José Gutiérrez Abascal 2, 28006 Madrid, Spain;1. College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China;2. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;3. State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical, Engineering, Xiamen University, Xiamen 361005, China |
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| Abstract: | SERS of pyridine molecules adsorbed on AgCl colloids are recorded. The enhancement origins are discussed by studying the effects of illumination, thiosulfate, hydrogen peroxide and ferricyanide on SERS of pyridine on AgCl colloids. In addition to an important contribution of local field enhancement on photolytic Ag particles in AgCl colloid, the surface Ag+ complexes on AgCl colloids as the SERS-active sites also make an important contribution to SERS of pyridine on AgCl colloid. |
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